metal shelving rack 3d model

A realistic three-level car parking lift system with four vertical support columns at the corners, each column extending continuously from the first level to the third level, flat rectangular platforms on each level, clean and sturdy industrial structure, symmetrical layout, strong metal frame, minimalistic design, no unnecessary details, realistic proportions, compact vertical arrangement, miniature scale 1:64, no cars, no people, no background, no text, no logos, isolated object, solid geometry, no hollow parts, no internal components, optimized for 3D printing, clean topology, slightly simplified details for durability